All visitors to a secure facility should be ______.

Visitors to a secure facility should be escorted to maintain security and ensure that they do not access restricted areas without supervision. Escorting visitors helps mitigate potential security risks by allowing authorized personnel to monitor their activities and guide them to appropriate locations within the facility. This practice helps uphold the integrity of the facility's security protocols and protects sensitive information or assets.

While options like fingerprinting and photographing may enhance security measures, they do not actively manage or control visitor movement within the facility. Similarly, requiring visitors to wear protective equipment addresses safety concerns but does not provide a method for oversight or security assurance. Escorting visitors is a proactive approach to ensuring that proper access controls and security protocols are followed within secure environments.